| 摘要 |
The present invention provides: the new use of compounds of formula (II) wherein R<1> is H or Me, preferably H; R<2> is OH, preferably in alpha conformation; R<3> is H, or R<2> and R<3>, taken together, are O; R<4> is H or Me, preferably Me, and preferably in alpha conformation; R<5> is H; R<6> is H; or R<5> and R6, taken together, are O; R<7> is H or Me, preferably H; R<8> is H, Me or -CH2 O CO CH3. The present invention also provides a method of analgesia comprising administering an effective amount of a compound of formula (II) wherein R<1> est H or Me, preferably H; R<2> is OH, preferably in alpha conformation; R<3> is H, or R<2> and R<3>, taken together, are O; R<4> is H or Me, preferably Me, and preferably in alpha conformation; R<5> is H; R<6> is H; or R<5> and R<6>, taken together, are O; R<7> is H or Me, preferably H; R<8> is H, Me or -CH2 O CO CH3. The present invention also provides an analgesic composition comprising a compound of formula (II) wherein R<1> is H or Me, preferably H; R<2> is OH, preferably in alpha conformation; R<3> is H, or R<2> and R<3>, taken together, are O; R<4> is H or Me, preferably Me, and preferably in alpha conformation; R<5> is H; R<6> is H; or R<5> and R<6>, taken together, are O; R<7> is H or Me, preferably H; R<8> is H, Me or -CH2 O CO CH3 together with a pharmaceutically acceptable diluent.
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